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Tap water quality report

Ft. Supply, OK

EPA monitoring detected 16 contaminants across the 1 water supplier serving Ft. Supply. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

1
water supplier
43
people served
16
contaminants found
Oklahoma rankings Lead in Oklahoma PFAS in Oklahoma

What was found in Ft. Supply's water

The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate-Nitrite
2335.5 µg/L 23%
of the EPA limit 10000 µg/L
Main supplier: ELLIS CO RWD#1 · 43 people · 2019
1/1 SYR4
Barium
440 µg/L 22%
of the EPA limit 2000 µg/L
Main supplier: ELLIS CO RWD#1 · 43 people · 2018
1/1 SYR4
Fluoride
347.5 µg/L 8.7%
of the EPA limit 4000 µg/L
Main supplier: ELLIS CO RWD#1 · 43 people · 2018
1/1 SYR4
Copper
169 µg/L 13%
of the EPA limit 1300 µg/L
Main supplier: ELLIS CO RWD#1 · 43 people · 2018
1/1 SYR4
TTHM
20.06 µg/L 25%
of the EPA limit 80 µg/L
Main supplier: ELLIS CO RWD#1 · 43 people · 2019
1/1 SYR4
Dibromochloromethane
8.32 µg/L
No EPA limit set
Main supplier: ELLIS CO RWD#1 · 43 people · 2019
1/1 SYR4
Lead
6.2 µg/L 41%
of the EPA limit 15 µg/L
Main supplier: ELLIS CO RWD#1 · 43 people · 2018
1/1 SYR4
Bromoform
6.08 µg/L
No EPA limit set
Main supplier: ELLIS CO RWD#1 · 43 people · 2019
1/1 SYR4
Arsenic
4.575 µg/L 46%
of the EPA limit 10 µg/L
Main supplier: ELLIS CO RWD#1 · 43 people · 2019
1/1 SYR4
Bromodichloromethane
4.36 µg/L
No EPA limit set
Main supplier: ELLIS CO RWD#1 · 43 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
3.76 µg/L 6.3%
of the EPA limit 60 µg/L
Main supplier: ELLIS CO RWD#1 · 43 people · 2019
1/1 SYR4
Combined Uranium
2.646 µg/L 8.8%
of the EPA limit 30 µg/L
Main supplier: ELLIS CO RWD#1 · 43 people · 2017
1/1 SYR4
Dibromoacetic Acid
2.56 µg/L
No EPA limit set
Main supplier: ELLIS CO RWD#1 · 43 people · 2019
1/1 SYR4
Chloroform
1.5 µg/L
No EPA limit set
Main supplier: ELLIS CO RWD#1 · 43 people · 2019
1/1 SYR4
Dichloroacetic Acid
1.34 µg/L
No EPA limit set
Main supplier: ELLIS CO RWD#1 · 43 people · 2019
1/1 SYR4
Lead
0.0056 mg/L 37%
of the EPA limit 0.0150 mg/L
Main supplier: ELLIS CO RWD#1 · 43 people · 2024
1/1 LCR
Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of the system's samples — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Ft. Supply

SupplierPopulation served
ELLIS CO RWD#1 43

Frequently asked questions about Ft. Supply tap water

Is Ft. Supply tap water safe to drink?

EPA testing detected 16 contaminants in the water serving Ft. Supply. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Ft. Supply?

1 public water supplier report drinking-water monitoring for Ft. Supply, Oklahoma to the EPA. Each is listed above with its population served.

What contaminants are in Ft. Supply's water?

The contaminants EPA monitoring detected in Ft. Supply include Nitrate-Nitrite, Barium, Fluoride, Copper, TTHM. The full list, with the level at the main supplier and the data source, is in the table above.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.